I'm not talking peck on the cheek, I'm talking full on 20 minute passionate makeup session, without either being drunk.

This was the outcome of the date but prior to the date and still subsequently she barely texts and let's on very little. People tell me this means she's not into me, but how do I reconcile that with the above and the fact she suggested a second date, and if she is interested, why play it so super cool when apart?